.sc-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.sc-center-item {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  transform: translate(-50%, -50%);
}

.sc-node-item {
  position: absolute;
  left: 100%;
  top: 50%;
  z-index: 2;
}

.sc-line-item {
  position: absolute;
  z-index: 1;
  top: 50%;
  transform: translate(0, -50%);
}
